docs: def process(self, msg, kwargs):
          """Process the logging message and keyword arguments passed in to
          a logging call to insert contextual information.
  
          :param str msg: The message to process
          :param dict kwargs: The kwargs to append
          :rtype: (str, dict)
  
          """
          kwargs['extra'] = {
              'correlation_id': self.parent.correlation_id,
              'parent': self.parent.name
          }
          return msg, kwargs